Climate waterfall / Santa Elena Canyon Mariscal Canyon Boquillas Canyon / Resource waterfall / Chisos Mountains / Resource Protection Climate waterfall / Chihuahuan Desert / Santa Elena Canyon / Resource Protection waterfall / Protection Climate waterfall / Rio Grande / Weather waterfall / /
Organization
Division of Interpretation and Visitor Services / Congress / Student Conservation Association / National Park Service / Big Bend Natural History Association / Big Bend National Park Service U.S. Department of the Interior Big Bend National Park Rio Grande WIld / /
Person
William E. Wellman / Protection / SCOTT REGAN / /
Position
Major / representative / students Junior Ranger / Superintendent / /